Full Post for Newest Post Only

I would like to be able to display the full post for only the newest posts on the front/home page. The rest of the posts can be excerpts either on the front page or in the archives/older posts.

Is this possible to do with decode? If so what would be the easiest option? Keeping the full single post on the front/home page with excerpts of older posts below or creating and archive/older posts page with Excerpts and only having the newest post on the front page.